SunVox vs KDJ
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SunVox
This is a powerful, cross-platform modular synthesizer and pattern-based music sequencer. It offers a wide range of built-in synthesizers, effects, and sample support for creating complex musical compositions.
- Modular interface
- Pattern-based sequencer
- Microtonal sequencing
- Sample import (WAV, AIFF, XI)
- XM and MOD import
- MIDI import/export
- Built-in synthesizers and effects
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SunVox is one of the most powerful music creation tools for iOS. It is a small and fast cross-platform modular synthesizer with pattern based sequencer (tracker). [ Key features ] • Modular interface. • Powerful microtonal sequencer. • Highly optimized synth algorithms. • Support of 16/24/32bit WAV, AIFF and XI samples. • XM (FastTracker) and MOD (ProTracker, OctaMED) import. • Multitrack WAV export. • MIDI import/export. • MIDI IN/OUT. • Mic/Line recording (using the Sampler). • Audio Unit Extension (AUv3 instrument/effect), Audiobus. • Generative music features: random selection of notes, random values of controllers, probability effects. • It's possible to use SunVox engine in your own applications using the free library for developers. • It is also available for other systems (see the site). [ Brief instruction ] The main menu - button with the SunVox icon in the upper left corner of the screen. To connect one module (source) to another (destination): first touch on the source, second touch on the destination. Official SunVox homepage, user manual, video tutorials: https://warmplace.ru/soft/sunvox SunVox music: https://warmplace.ru/soft/sunvox/#music Found a bug? Have some questions? Just write me directly: nightradio@gmail.com The answer comes immediately! [ Built-in synthesizers & effects ] • Generators; • DrumSynth with 120 unique synthetic drum sounds; • FM synthesizer; • Multisample instrument; • SpectraVoice (FFT-based synthesizer for warm atmospheric sounds); • Side Chain Compressor; • Distortion; • Echo & Reverb; • Equalizer & Filters; • Flanger; • Loop (for glitch effects); • Vocal Filter (for human voice simulation); • Vorbis Player; • WaveShaper; • Pitch Detector; • Pitch Shifter; • and more ... [ Jordan Rudess about this app ] Sunvox is a serious music application. I am personally running it on my iphone. In the overcrowded world of music apps, Sunvox stands out as both unique and powerful. If you are a musician and own an iphone, you owe it to yourself to try this amazing application!
KDJ
Create music on your smartphone with a portable audio workstation. Compose original songs or mix existing tracks using over 400 instruments and 200 preset samples. Ideal for beginners and on-the-go musicians.
- Compose music in 5 minutes
- Over 200 preset tracks
- Over 400 instruments
- Sequencer, Synthesizer, Sampler modes
- Song Mode for arrangement
- Personal DJ machine functionality
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Introducing the smartphone app of the world’s first portable audio workstation, the “KDJ-ONE”! Compose a song in just 5 minutes on your smartphone device! Compose your own music, or mix existing tracks and use it as your own personal “DJ Machine”. Utilize your imagination and ideas to create your own music as if you were in a professional studio. Boasting a selection of more than 200 preset tracks and over 400 instruments to choose from, you can compose your own music without a musical background. Create a short melody in 5 minutes, or use the mute function and song mode to mix and easily play music like a DJ. ◆Recommended For:◆ Beginners looking to create their own music! People who want to create music on the go! On tour, vacation… and more! People creating music for games and performances! People who want to experience the hardware version of the KDJ-ONE! ◆Functions: Preset Samples: Over 200 tracks! Preset Instruments & Sounds: Over 400 varieties! Modes: Sequencer (Insert different instruments and sounds into your composition) Synthesizer (Synthesize waveforms to form a timbre) Sampler (Record and modify sounds from external audio inputs) Song Mode (Arrange and playback your composition) ◆Languages: Japanese, English ◆Compatibility iOS 10.0 or later ◆URL KDJ-ONE Official Site: http://www.kdj-one.com This app is based on the hardware version of the “KDJ-ONE” and may differ with regards to development and functions.
Screenshots
Verdict
The clearest difference is price: KDJ at Free against SunVox's $5.99. KDJ also leads on iOS requirement (10.0 vs 12.0). SunVox's advantage is review sentiment (93% vs 67%) and update cadence (monthly vs every 3 months). On rating, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
KDJ is free to download; SunVox costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.9 for SunVox against 4.8 for KDJ. That said, the two scores are not equally well evidenced: SunVox has 332 ratings behind it against 17, so its average is the more settled of the two. Written reviews are what separate them: 93% of SunVox's written reviews are positive against 67% of KDJ's.
SunVox ships an update monthly, KDJ every 3 months. The most recent releases landed on October 17, 2026 and October 4, 2026 respectively.
| Parameter | SunVox | KDJ |
|---|---|---|
| Price | $5.99 | Free — better |
| Rating | 4.9 (332 ratings) — better | 4.8 (17 ratings) |
| Positive reviews | 93.4% of reviews — better | 66.7% of reviews |
| Number of ratings | 332 — better | 17 |
| Update frequency | Monthly — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 110 MB | 82 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexander Zolotov | CyberStep, Inc. |
Customer experience
SunVox
KDJ
Bugs and requests
SunVox
Reported bugs
2 issues- Compatibility issues with newer iOS versions
- Inconsistent behavior when importing/exporting projects
Requested features
5 requests- Improved file management and organization
- Expanded MIDI and automation capabilities
- Ability to create and save custom module presets
- More intuitive and streamlined user interface
- Support for external MIDI controllers and keyboards
KDJ
Not enough reviews yet to summarise bugs or requests.
In-app purchases
SunVox
No in-app purchases
KDJ
No in-app purchases









